如何使用Swift获取youtube频道的所有播放列表？

Question

我的问题不在于从一般渠道中检索视频.我只想获得频道创建的所有"播放列表",并检索每个播放列表的缩略图,标题和视频数量.

这是一个youtube频道示例:

如您所见,有许多创建的播放列表.

截至目前,我只能获得最新上传的频道视频,在这种情况下只有5个.

使用以下代码:

let urlString = "https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&playlistId=\(playlistID)&key=\(apiKey)"

// Create a NSURL object based on the above string.
    let targetURL = NSURL(string: urlString)

    // Fetch the playlist from Google.
    performGetRequest(targetURL, completion: { (data, HTTPStatusCode, error) -> Void in

        if HTTPStatusCode == 200 && error == nil
        {
            // Convert the JSON data into a dictionary.
            let resultsDict = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as! Dictionary<NSObject, AnyObject>

            print("resultsDict = \(resultsDict)")

           ......
        }
        else
        {
            print("HTTP Status Code = \(HTTPStatusCode)")
            print("Error while loading channel videos: \(error)")
        }

    }) 

输出resultsDict:

[etag: "DsOZ7qVJA4mxdTxZeNzis6uE6ck/0JswUeQp5Wp8607mWPWAfIZaNnM", kind: youtube#playlistItemListResponse, items: (
        {
        etag = "\"DsOZ7qVJA4mxdTxZeNzis6uE6ck/hQUAFFn45u2V47VqvBg1urbZevU\"";
        id = "UUS8cX3kg_pL2jw7cOjGoiBw9Ri_jF-DJp";
        kind = "youtube#playlistItem";
        snippet =         {
            channelId = "UCJKOvdk-nVzDAFR_9MF64sw";
            channelTitle = AppSpy;
            description = "James (@Metal_Slag) punches blocks and butt-stomps critters in neon platformer Super Phantom Cat.\n\nDOWNLOAD FROM THE APP STORE:\nhttps://itunes.apple.com/us/app/super-phantom-cat-be-jumpin/id1041873285?mt=8\n\nSUBSCRIBE TO APPSPY:\nhttps://www.youtube.com/subscription_center?add_user=appspy\n\nVISIT:\nhttp://www.pocketgamer.co.uk";
            playlistId = "UUJKOvdk-nVzDAFR_9MF64sw";
            position = 0;
            publishedAt = "2016-02-12T15:59:10.000Z";
            resourceId =             {
                kind = "youtube#video";
                videoId = qkMOjc02NRg;
            };
            thumbnails =             {
                default =                 {
                    height = 90;
                    url = "https://i.ytimg.com/vi/qkMOjc02NRg/default.jpg";
                    width = 120;
                };
                high =                 {
                    height = 360;
                    url = "https://i.ytimg.com/vi/qkMOjc02NRg/hqdefault.jpg";
                    width = 480;
                };
                maxres =                 {
                    height = 720;
                    url = "https://i.ytimg.com/vi/qkMOjc02NRg/maxresdefault.jpg";
                    width = 1280;
                };
                medium =                 {
                    height = 180;
                    url = "https://i.ytimg.com/vi/qkMOjc02NRg/mqdefault.jpg";
                    width = 320;
                };
                standard =                 {
                    height = 480;
                    url = "https://i.ytimg.com/vi/qkMOjc02NRg/sddefault.jpg";
                    width = 640;
                };
            };
            title = "MEW-RIO? | Super Phantom Cat iPhone & iPad Preview";
        };
    },
....
// Display info for most recent remaining 4 videos
....
, nextPageToken: CAUQAA, pageInfo: {
resultsPerPage = 5;
totalResults = 3966;
}]

而不是检索频道的视频,如何使用youtube api v3检索其播放列表？

谢谢

Answer 1

我看到你正在使用playlistItems你的链接.这只会从播放列表中抓取视频.

当您输入part as 和channelid as 时,请点击此链接并在底部.然后单击"执行而不使用OAuth".您将从该channelid获取所有播放列表的json对象.snippetUCJKOvdk-nVzDAFR_9MF64sw

在请求中它显示了这个:

GET https://www.googleapis.com/youtube/v3/playlists?part=snippet&channelId=UCJKOvdk-nVzDAFR_9MF64sw&key={YOUR_API_KEY}

使用该网址,您应该能够抓住它.